Continuous path gripper shuttle loom



Jan. 3, 1950 v, WERNER ETAL 2,493,515

CONTINUOUS PATH GRLPPER SHUTTLE LOOM Filed Sept. 20, 1947 4 Sheets-Sheet 1 Inventors: VIEW ER and vi, 7

Jan. 3, 1950 v, ER ETAL 7 2,493,515

CONTINUOUS PATH GRIPPER SHUTTLE LOOM Filed Sept. 20, 19 47 4 Sheets-Sheet 2 n i 30 Flt. 3

14 la V 2 INVENTORS ark F ATTOR/VE Jan. 1950 v. WERNER EI'AL 2,493,515

CONTINUOUS PATH GRIPPE'R SHUTTLE LOOM Filed Sept. 20, 1947' 4 Sheets-Sheet 3 l0 4 I Q I I 1 20 1 i I 2 I 2 I I ,r l a??? I I I I I a v I w A 5 lNVE N 7 OPS l H 1/11. EM W'RA/i/P, mva

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By W

ATTORNEY 3, 1950 v, RN R ETAL 2,493,515

com'muous PATH GRIPPER SHUTTLE LOOM Filed Se t; 20, 1947 4 Sheets-Sheet 4 INVENTORS V/LEM [rt/awn, 44/0 ((4051. lfua Am. By 0L4 ATTORNEY Patented Jan. 3.19 50 2,493,515 CONTINUOUS ram GRIPPER snume LOOM Vilm Werner, Phen, and Karel Czechoslovakia, asslgnors of jovka Brno, Narodni P Anna Factory, National Kubelka, Blansko,

Corporation, Prague,

CIechoslovakla, a corporation of Czech slovakia Application September 20, 1947, Serial No.

In cleclioalovakin September 20, 1946 4 Claims. (0!. l39l26) In the known automatic weaving looms the weft bobbin is mounted in a shuttle which travels in a reciprocating movement through the shed formed by the decussation of the warp. Such mounting of the weft bobbin in the shuttle necessitates a quite complicated construction which increases the cost price and complicates the manipulation of the loom. To achieve a continuous andv quick weaving it would be advisable to use large sized shuttles capable to accommodate therein a bobbin with large weft supply. This, however, cannot be done in view of the limited dimensions of the shed and in view of the limited resistance and elasticity of the w In addition thereto dimculties would arise resulting from the reciprocating movement of the enlarged and overcharged shuttle and from the arising accelerations and retardations of the moving masses.

The obiect of our invention is to avoid the said and other disadvantages resulting from the use of shuttles performin a reciprocating movement. For this purpose we use according to our invention a stationary weft bobbin situated outside the weaving implement (shuttle) for thread through the shed so that said does not participate in the forth and meat of said weaving implement, the weft thread being introduced into the shed with the help of a driver moving in one direction only. This driver may have a very simple and compact shape and the weft bobbin arranged outside said driver may be of any desired size and capacity. Even the usual large warp bobbins may be used for this purpose thus avoiding any cops. The resulting driving conditions are much more propitious in view of the easy and smooth movement of the said weaving implement which travels through the shed in one direction only as stated above. The arrangement is therefore always dynamically balanced and runs quietly.

The novel features which we consider characteristic of our invention are set forth with particularity in the appended claims. The invention itself however and additional objects and advantages thereof will best be understood from the following description of an embodiment thereof when read in connection with the accompanying drawing in which Fig. 1 shows a front view of our new weaving echanism that may be used in con'lbination with any known automatic weaving loom, and

Fig. 2 is a top view thereof;

Fig. 3 is a vertical cross section showing the 2 open shed, the sley and the driving means for the same and for the proper weaving implement according to our invention;

Fig. 4 shows in perspective view the catcher referred to in the specification;

Fig. 5 is a perspective view of the feeder referred to in the specification:

Fig. 6 is a perspective view of the receiving or seizing device referred to in the specification;

Fig. 7 shows in part. a scheme for the driving mechanism for the catcher;

Figs. 8 and 9 show in rent view and in side view respectively a weavi g loom comprising our new weaving implement; V

Fig. 10 shows in perspective view the catcher and the feeder in cooperating position, and

Fig. 11 shows in perspective view the catcher and the receiving or seizing device in cooperating position.

The same numerals designate the same parts inallflsures.

In the following general description we refer atfirstmainlytoFigs. 1,2,3, 7,8and9.

The warp I is arranged above and between two driving wheels 2 and 2' whi 11 may be friction wheels or toothed wheels or the like and whose axles are approximately distanced fromleach other by the width of the warp I. The weft'bobbin 3 which may have any desirable shapeand size is mounted in a, lateral stationary position advantageously on some fixed part of the loom. Above the wheel 2 is a stationary feeder 4 through which the thread coming from the weft bobbin 3 passes and which holds the end of the lweft thread in a position ready to be seized and carried through the shed. .1 The proper weaving implement eil'ectingL-the, driving of the thread through the shed formed by the known decussation of the warp l 'c'omprises a flexible belt, band or the like 6 madei for example from flexible sheet steel which is. not longer than the distance between the axles ofthe wheels 2, 2 plusthe circumference of one of these wheels as appearing especially from Figs. 1, 7, and 8. This limitation of the length of the belt 6 appears necessary to bring said belt out of contact with the reed I 0 after the weft thread has been introduced into the shed I. The saidf belt 6 or the like is seized by the constantly rotating wheels 2, 2' and carried by them continuously around in an endless path in the direction ofthe shown arrows. During this movement the said belt 6 is held and guided by the O-shaped guide while passing the shaft It; This shaft is driven by pair 25, 25.

anon-us J 3 rail or the like I which surrounds theouter half of the circumferences of the wheels 2, 2' and supports the beltwhile it is moving from wheel 2' to wheel 2.

On the said belt 6 is a catcher I mounted which stationary feeder 4 catches the protruding end of the weftthread coming from the bobbin I and carries the same through the shed formed by the warp I to the receiving or seizing device 8 which captures and seizes .the

incoming end of the weft thread freeing the same from the catcher I. As soon as the continuously moving belt t emerges completelyfrom the shed I,

into action settling the weft thread in place, the knife or other cutting implement 9 cuts the weft thread near the-feeder 4 and the stationary receiving or seizing device 8 the reed ll comes 4 ing device I is apparent from Figs. 10 and 11 respectively.

The catcher I on its circulating path before entering the shed I comes into contact with the wedged end ll of the feeder 4 which enters between theelastic pincer arms III, II of the catcher I and opens the same. The graspingfjaws 28, 29 slide in open position along the sides of the feeder 4 until they pass the laws 34, 35 out of which protrudes the end of the weft yarn which is seized by the 01051118 :laws 2., 28 and carried through the shed (Fig. 3). when leaving the shed the releases the other end of said thread. The actuation of the knife or cutting implement 9 and the thread release from the receiving or. seizing device I may be initiated by the described movement of the reed II or in any other proper man- 'l'hereafter a new shed is formed in the warp I in any of the many. known manners and the operation described above is repeated continuously.

Referring to Fig-3 it appears that the sley ll oscillates aboiitthe shaft I I and is driven from the main shaft l2 by the crank mechanism l3, l4. The driving mechanism for the belt or band t comprises the wheels 2, 2', the pair of bevel wheels l9, 2., the shaft I8 and the bevellwheel air l1 and It, the latter being mounted upon the the bevel wheel the shaft 21, the bevel wheel pair 24, 23 and the toothed gear 22, 2| the latter being mounted upon the main shaft l2.

The catcher 1 shown in enlarged scale in Figs. 4, 10 and 11 is mounted on the belt 6 which contains in regular distances openings or the like 39 engaging withthe teeth of the wheels 2, 2' as shown in Fig. I. The catcher comprises two elastic pincer arms fl, 3| which end into grasping jaws 28, 29 and which are attachedto the wedge shaped support 32 connected to the belt 6.

' The feeder 4 shown in enlarged scale in Figs.

and comprises the central body 33 which is "adapted to guide the weft yarn coming over the peg 21., The central body 33 supports the elastic the weft yarn, and the opposite side of said central body passes into the wedge 36. A wedgelike member 33' is attached to the central body 32 and extends between the pincers 34, 35 preventing their too strong clamping.

The receiving device 2 illustrated in enlarged scale in Figs. 6 and 11 comprises the central body 38 which supports elastically mounted grasping jaws 39, 4. having in their lower part an opening as appearing in dotted lines in Fig. 6, and in Fig. 11. In the space between the elastic jaw arms is an opening device situated which consists of an edged head piece 4| supported by a pin, 4| mounted in the body 38.

The weaving loom illustrated in Figs. 8 and 9 shows the su ports 42, 43 with the main shaft l2 and the shaft I! as described above. This shaft l5 supports the sley l I resting on the bearings 44, 45. The warp is wound upon the. beam 46, and

passes over the roller n to the cloth-beam 4a.

. catcher 1 enters into cooperation with the seizing device 8 which is situated at the other end of the shed l' as shown in Fig. 8. The wedge-shaped support 32 enters into the openings arranged in the lower part of the laws 38, 40 and opens these jaws to permit the passage of the pincer arms 30, 3| through the openings between the jaws 39, 40. Immediately thereafter the pincer laws 39, 40 seize the weft yarn still carried by the laws 29, 28 while the edged head piece 4| enters between the laws 2|, 2! and releases theweft yarn end therefrom. 1

While we have shown and described a specific embodiment of our invention, it will be apparent to those skilled in the art that various changes,

modifications, substitutions, additions andomissions may be made therein without departing from the spirit and scope of our invention as set forth'in the appended claims.

What we claim as our.inventionis:

1. In an automatic weaving loom the'combination comprising a pair of rotatin driving wheels 7 having parallel axles distanced from each other by about the width of the warp, a flexible belt continuously driven by and around said wheels and through the shed in one direction in an endless path, the free ends' of the said belt bein apart for at least the width of the warp, a thread catcher. attached to said belt, a stationary weft bobbin arranged outside the path of said belt, a

feeder situated on oneside of the warp supporting the end of the weft thread and cooperating with the moving catcher, a seizing device situated on the other side of the warp, said seizing device freeing the pulled end of the weft thread from the catcher, and a thread cutting device close behind the feeder.

2. In an automaticweaving 100111 the combination comprising a reed, a stationary mountedweft bobbin, a driver moving continuously in an endless path leading through the shed, a thread catcher attached to said driver, 'a stationary thread feeder in front of the shed in the direction of the driver movement, said thread feeder holding the free end of the weft thread and cooperating with said catcher, a stationary seizing device behind the shed with means to free the thread .end from said catcher, and to release the same tion comprising a reed, a stationary mounted weft bobbin, a driver moving continuously in an endless path leading through the shed, a thread catcher attached to said driver, a stationary thread feeder infront ofthe shed in the direction of the driver movement, said thread feeder holding the free end of the weft thread and cooperating with said catcher, a stationary seizing device behind the shed with means to free the thread end from said catcher and to release the same before the action of the read, and a thread cutting device near said'feeder.

letter in an endless path continuously in one Number direction through the shed, the axle distance of 1 161 979 the said driving wheels being about equal to the 2:420:38)

width of the warp, and the free ends of said belt or band being distanced from each other at least 10 by the width of the warp.

VILEM WERNER. KAREL KUBELKA Number 6 REFERENCES crran The following references are of record in the tile of this patent:

UNITED STATES PATENTS I Name Date Salisbury Nov. 30, 1915 Moessinger May 13, 1947 FOREIGN PATENTS Country Date France Sept. 2, 1935 

